JPS5946173B2 - Electric cooking machine switch device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a switch device with a simple configuration for controlling the stopping, running, etc. of the electric motor in a cooking machine such as a hand mixer having an electric motor.

In conventional switch devices, several lead wires with different electrical resistances are wired from the motor inside the main body, each lead wire is connected to the switch part, and a contact terminal is provided for each lead wire, which is exposed outside the main body. The motor was controlled by opening and closing the contact terminals by operating the operating knob.

However, with this structure, the contact part of the switch device must be placed near the operating knob exposed outside the main body, so if the operating knob gets wet with liquid such as water,
An abnormality such as poor insulation of the contact had occurred.

Furthermore, in order to prevent such abnormalities, a waterproof structure is required, which increases the cost of the switch section.

Therefore, the present invention provides a connection 7 for a switch device in the main body of a cooking machine.
By arranging the Q part, the above problem is solved, and one embodiment thereof will be explained below with reference to the drawings, taking a /'t mixer as an example.

In the figure, 1 is the armature of the motor, with bearings 3 at both ends.
and is attached to the lower main body 5 via the motor frame 4.

Reference numeral 2 denotes a field part of the electric motor, which is attached to the main body 5 via the motor frame 4.

A worm gear 6 is formed at the tip of the armature shaft 1' and rotates two gears 7 provided on the left and right sides.

Reference numeral 9 denotes a stirring blade in which a shaft 10 is removably fitted into a shaft portion 8 provided on a gear 7. By rotating the pair of stirring blades, cooking such as whisking can be performed.

Reference numeral 11 designates an upper main body of the hand mixer having a handle 11', which is integrally attached to the main body 5 with screws 12.

And, on the upper end surface of the field portion 2 of the electric motor, there is a speed control terminal 2 a ) 2 b 12 c y made of a spring material.
2d is formed, and a conductor 13 is fixed to the upper surface inside the main body 11 facing thereto.

Reference numeral 14 denotes a plate-shaped insulator in which notch holes 14a, 14b, 14c, and 14d are formed corresponding to the speed control terminals 2a, 2b, 2c, and 2d.
b Located between z2c, 2d and the conductor 13, and the main body 11
The connecting portion 15a of the operating knob 15 exposed to the outside and the locking hole 14e of the insulator are fitted and connected.

The operating knob 15 is held by a metal fitting 16, and the metal fitting 16 is fixed to the main body 11 with screws 17.

18 is a power cord connected to the electric motor section.

A brush spring 19 is held in the field part 2 of the electric motor.

Speed control terminals 2a provided in the field portion 2 of the electric motor are common terminals, 2b is a low speed terminal, 2c is a medium speed terminal, and 2d is a high speed terminal.

Further, the cutout holes 14a formed in the insulator 14 are holes for common terminals, 14b are holes for low speed terminals, 14c are holes for medium speed terminals, 1
4d is a hole for a high speed terminal.

Next, the operation of the switch device and its operation will be explained.

In FIG. 1, the common terminal 2a is located in the common terminal hole 14a,
Although it is in contact with the conductor 13, other terminals 2b, 2c, 2
Since point d is insulated by the insulator 14 and is not in contact with the conductor 13, the motor is in a stopped state.

Therefore, as shown in FIG. 2, when the operating knob 15 is operated in the direction of the arrow, it rotates around the center point 15b held by the metal fitting 16.

Therefore, the insulator 14 moves horizontally, the common terminal 2a remains in contact with the conductor 13, and the low-speed terminal 2b moves through the low-speed terminal hole 1.
4b, and comes into contact with the conductor 13.

That is, the terminals 2a and 2b shown in FIG. 4 are connected via the conductor 13, and the motor rotates at a low speed.

As above, if you operate the operation knob 15 further, the fourth
Terminals 2a and 2c shown in the figure are connected through a conductor 13 and rotate at a medium speed (not shown), and terminals 2a and 2d are connected through a conductor 13 and rotate at a high speed (not shown).

In this way, the present invention forms a speed control terminal on the electric motor, interposes an insulator with a cutout hole between it and the conductor, and connects this with the operation knob, thereby controlling the contact portion of the switch device on the main body. Since it can be located internally, the switching device for the cooking machine has a simple structure, is highly safe, uses low resources, is low cost, and has good assembly.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a hand mixer showing an embodiment of the present invention, FIG. 2 is a sectional view of the main parts showing the electric motor in a low speed rotation state,
FIG. 3 is a perspective view of the field portion of the motor, FIG. 4 is a circuit diagram of the motor, and FIG. 5 is a perspective view of an insulator. 1... Armature, 2... Field part of the motor, 2a to 2d... Speed control terminal, 5, 11.
...Main body, 13...Conductor, 14...
...Insulator, 14a-14d...Notch hole, 1
5...Operation knob, 18...Power cord.

Claims (1)

[Claims] 1. A motor with a speed control terminal formed in the main body and a conductor separate from the motor are provided, and an insulator having several notched holes is interposed between the speed control terminal and the conductor, and the The object is connected to the operating knob exposed on the outside of the main body, and by operating the operating knob, the above-mentioned insulator is moved, so that the speed control terminal is located in the cutout hole of the insulator and comes into contact with the conductor, and the motor is activated. A switch device for electric cooking machines that performs control.